33813-75-1Relevant articles and documents
Synthesis of two osteoclast-forming suppressors, demethylincisterol A 3 and chaxine A
Yajima, Arata,Kagohara, Yuuma,Shikai, Keisuke,Katsuta, Ryo,Nukada, Tomoo
, p. 1729 - 1735 (2012)
The synthesis of two potent osteoclast-forming suppressing agents isolated from the Chinese mushroom Agrocybe chaxingu, demethylincisterol A3 and chaxine A, was accomplished using ergocalciferol as the starting material. Our methodology for the synthesis of demethylincisterol A3 and chaxine A featured the construction of a butenolide moiety by the intramolecular Horner-Wadsworth-Emmons reaction under Masamune-Roush conditions. This is the first reported synthesis of chaxine A.
VITAMIN D RECEPTOR ACTIVATORS AND METHODS OF MAKING
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Page/Page column 23, (2009/05/28)
The invention relates to compounds that are vitamin D receptor activators, compositions comprising such compounds, methods of using such compounds and compositions, processes for preparing such compounds, and intermediates obtained during such processes.
On the Julia Alkenylation reaction in vitamin D synthesis. Isolation of four geometrical isomers of vitamin D4
Blakmore,Grzywacz,Kocienski,Marczak,Wicha
, p. 1209 - 1217 (2007/10/03)
Coupling of sulfone 2 and aldehyde 3b using the Julia alkenylation procedure has been reexamined using modern product separation techniques. It was found that vitamin D4 1b and its geometric isomers 10, 11 and 12 are formed in a ratio of 75:10:10:5, respectively. The building blocks 2 and 3b were prepared from vitamin D2. Correlations for the structure assignment of vitamin D stereoisomers by 1H NMR spectroscopy are presented.